What Is the Molar Concentration of Ag⁺(aq) in a 1 $\times$

What is the molar concentration of Ag⁺(aq) in a 1.00 M solution of Ag(NH₃) ₂⁺ with no excess ammonia? Given: K_f = 1.70 $\times$ 10⁷ for Ag (NH₃) ₂⁺.

A) 2.45 $\times$ 10^-3 M
B) 3.09 $\times$ 10^-3 M
C) 2.42 $\times$ 10^-4 M
D) 1.47 $\times$ 10^-8 M
E) 1.70 $\times$ 10^-8 M